[Issue 4266] add support for structs in std.format.doFormat

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4266



--- Comment #1 from Trass3r <mrmocool at gmx.de> 2010-06-03 14:42:23 PDT ---
This is an (inefficient) workaround, but it does its job until this is fixed.


import std.string : format;
string myformat(T...)(T ts)
{
    string res;

    foreach (t; ts)
    {
        static if (is (typeof(t) U : U*) && !is(U == void)) // is a pointer
        {
            res ~= myformat(*t);
        }
        else static if (is (typeof(t) == struct))
        {
            res ~= "{";
            foreach(i, el; t.tupleof)
            {
                res ~= t.tupleof[i].stringof[2..$] ~ ":" ~ myformat(el); // the
slice cuts off the "t." that is always prepended
                static if (i < t.tupleof.length-1)
                    res ~= ", ";
            }
            res ~= "}";
        }
        else
            res ~= format(t);
    }

    return res;
}

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